Electric rail-bond.



' PATBNTBD MAR. 29, 1904.

5. LANDSING. ELECTRIC RAIL BOND.

v APPLICATION FILED APE. 25, 1900.

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"UNITED vSTATES Patented March 29, 1904.

JANG LANDSING, OF BROOKLYN, NEW YORK.

ELECTRIC RAIL-BOND.

Y 'SPECIFICATION forming par; of Letters Patent No. 755,889, dated march "29, 1904.

Application lled April 25, 1900,

To :LZ2 whom it mag/concern. Y

Be it known that I, .IANG LANDSING, a citi.-

' .zenof the United States, residing in the bor- Electric Rail-Bonds,

.with thel largest cross-sectional :illustrate the consecutive steps bility. Figs. 14 to 16 are longitudinal section of ough of Brooklyn, in the cityof New York,

in the county of Kings and State of New York,

have invented a new and useful Improvement of which the following' 1s a s pecication.

" Thisl invention, which relates to conductively connecting the abutting ends of rails,

has for its object the production of an electric bond'o continuity of material, of transversal and longitudinal elasticity, and of permanency rin contact between bond and rail.

The bond manufactured according to the y present invention is of homogeneous metal throughout 'its length and combines the greatest longitudinal and transversal elasticity area admissible between the fish-plate and the'rail-Web.

Inthe accompanying drawings, forming a part of the present application, Figures 1 to 6 illustrate the consecutive steps in producing one form of a contact-terminal, of which Figs. 7 and 8 are plan views. Figs. 9 to 13 of one way of producing longitudinal and f transversal' flexiplan views o f different forms of bonds. Fig. 17 is a modication of the connecting-piece; and Fig. 18 is a the ends of the adjoining rails, together with the fish-plates anda, bond in position.

Theprocess in a general way consists of three main steps: first, producing the terminals; second, dividing the body portion, and,

third, imparting longitudinal and transversal elasticity to the body portion.

In the process of manufacture a bar of commercial conducting material-for instance, rolled copper-is reduced in thickness at its ends a to facilitate the formation of the terminals. If solid attaching-terminals should be desired, the same may be made by -any process known in the art. A shallow impression b is then made concentric with but of larger diameter than the desired terminal. The depth of this impression is now increased, 0,' and its diameter decreased, and this operation may be re-f' peated until'a desired length and diameter of cross-Sectio sean No. 14,346. N0 model.)

I the terminal are obtained. An aperture d is then produced into the bottom portion of the depression and the remaining metal. f off-fthe bottom pressedV down and outwardly, so as lto increase the length and complete the formation ofthe terminal. The remaining shoulder g of lthe terminal maybe of any suitable shape. The body portion of the bond between the Aterminals is then divided into aseries of longitudinal elements. It is obvious that this operation of dividing may be done before or after the formation next step i's to decrease the distance. between the terminals by-suitably bending the elements of the connecting portion and then separating one of the elements z', as shown. in Fig. 11. In this element 1T a bend or loop k, resembling the letter S, -is now formed, Fig. 12, which is done without further` reducing the distance between the terminals. It' isp-not of the essence of this invention at or near the terminal, and any desired distance from the same may be chosen, nor is it necessary to form this loop exactly like an S. Any other. shape,as in Fig. 17, capable of be-y ing stretched or pressed longitudinally or transversally will answer the. same purpose. A second element j is now provided with a similar loop m, adjoining the one, c,'in elemente', and therefore at a different distance from the terminal. After all the elements are bent in the required shape the bond G will appear as illustrated in Fig. 14, and it isjreadily seen that thebond possesses edgewise as well as longitudinal. elasticity 'and flexibility,'which, although far in excess of that required bythe expansion and contraction of the abutting rails, is produced in a bond of such compactness so as-to be placedV between the fish-plate and the rail-Web and at the same time.

to carry the current required in startingv a eavy train.

to place this 100pk havingthe greatest possible4 of the. terminals. The y The elasticity is so great there is absolutely no .danger of strain on any of the parts or the pulling loose of thef the rail, and thereby resistance and Y decreasing conduce contact-terminals from creating tivity.

The relation of loops inthe single elements, which elements each mayconsist of the terminals, so as to leave space, if necessary,

for the screw-bolts holding the'fish-plates.

Fig. 18 illustrates the meeting ends 'M N of two rails, against which on one side is applied a rail-bond (i, the joint the fish-plate n yn, secured to the rails by the usual bolts,l the bond G being between the` railsand one of the fish-plates.v

Whatever stress or strains due to the expansion or contraction of the rails will be received and transmitted by the bond in direct line with the centers of the terminals, which fact tends to ,greatly insure the continuity of contact between bond and rail.

What I claim, and desire to secure 'by Letters Patent, is- 1. In an electric rail-bond having several looped connecting elements and in combination with the ends of two adjacent rails, the improvement, which'consi *in the loops of the separate elements bein bent out of the general direction of the elements, being also located outside of each other or unnested, and

being arranged at progressively-varying distances"from theends of the bond sov as to ex',

tend in a substantially oblique line relatively to one side of the bond, the intermediate loops.

being, with respect to the length of thebond,

located each between tw`o loops, substantially...

as set forth.

2. An electric rail-bond comprising several connecting elements, each of which extends longitudinally in a general direction parallel with the'others and all of which are in subbeing completed by stantial contact, but the end portions-0f each" of which elements are out of alinement, 'andtons, said loops being severallykspaced and varranged to form a series, veach loop thereof occurring at a different point along the element'with respect to the loop on the next'adjacent element, and means for attaching'said rail-:send to the rail ends, substantially as set fort'.

3. A`n electric rail-bond consisting of several connecting elements and means for attachingthem to the rail ends, the said elements being provided with diterently' spaced loops at points between the ends ofthe elements, 'and said' loops all being located on corigesponding.v sides of the elements, that is to say`, on correspending sides of corresponding end portions of the elements, and being placed side byfsde forth.

taching them to the rail ends, the elements outside of each other or nnnested, the said loops being further arranged at'progreesively-l varying distances from theends gf the bond relatively to one side of the bond,jthe"inter spect toA the length of the bond, being located directly 4between two. loops, and in contact, in the end wise direction of the bond, with the loops between whichtheyare located, substantiallyas set forth.'

1n testimop whereof I have hereunto set my hand, 1in t e presence of two subscribing witnesses, this 19th day of April, 1900.

" f f JANG LANDSING.

- "E.P. Wmoan, -N.'H. LANDsINe.

and outside each other in a series extending obliquely across the-bond, vsubstantially as set mediate ones-of the said'loops. mh, with reeach of which has a loop between saiden'd por- 4. An electric railbond which consists of' several lconnecting elements and means for at# 7"A ing provided with loops bent out of 'the 'gens 'i eral direction of the elements and' located also so as toextend in a substantiallyobliqne line 

